2Bros Parts

PISTON KIT 09-11 KTM400 EXC 95, PROX 01.6439.B HUSQVARNA

$262.96

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Delivery to United States 5–8 business days

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ProX Piston Kit 88.00 mm Bore 4-Stroke. Includes piston rings, wrist pin, and circlips. Precision machined using state-of-the-art CNC equipment with a low-expansion, low-friction piston alloy. Features an OEM-style tin coating for break-in assistance. Replacements parts. Kit includes ProX Ring Set 02.6429, ProX Pin 04.1947.5, and ProX Clips 05.1912. Part number 01.6439.B.

Specifications
SKU
56-W4739.B.PX
Brand
Pro-X Racing
Availability
In Stock (2)

Fitments (6)

MakeModelYear
HUSABERGFE 3902010
HUSABERGFE 3902011
HUSABERGFE 3902012
KTM400 EXC2009
KTM400 EXC2010
KTM400 EXC2011
General Product Group
Engine
General Product Type
Pistons & Kits
General Size
95mm
Variant Id
256022
Delivery5–8 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

ProX Piston Kit - 88.00 mm Bore

Upgrade your motorcycle's performance with this ProX Piston Kit, designed for optimal engine function. This kit provides a direct replacement for your original piston, ensuring a precise fit and reliable operation. Each ProX Piston Kit is manufactured using advanced CNC machining technology and a high-quality, low-expansion, low-friction piston alloy, mirroring the materials used by major Japanese engine manufacturers.

This comprehensive kit includes everything you need for a seamless installation:

  • ProX Piston
  • Piston Rings
  • Wrist Pin
  • Circlips

Featuring an OEM-style tin coating, this piston aids in a smooth break-in process, helping your engine perform at its best from the start. All components are precision-engineered for durability and performance. Replacement parts for this kit are also available, including ProX Ring Set 02.6429, ProX Pin 04.1947.5, and ProX Clips 05.1912.

Key Features:

  • Precise 88.00 mm bore size for specific engine applications.
  • Constructed from a superior low-expansion, low-friction alloy.
  • Includes all necessary components: piston, rings, wrist pin, and circlips.
  • OEM-style tin coating for enhanced break-in.
  • Manufactured using state-of-the-art CNC equipment.
  • Designed for reliable performance and longevity.
Before you buy

QUESTIONS? JUST ASK

Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00 (UK time).

Check the fitment table on this page against your make, model and year. Not sure? Call or email us and we will check it for you before you order.

Yes. We ship from the UK. Orders ship within 3 working days, then delivery to the United States takes 5–8 business days. The delivery price is shown at checkout before you pay. Delivery details

Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy

By card, PayPal, Apple Pay or Google Pay, or spread the cost with Klarna. Payment is taken securely by Stripe, and the options for your order are shown at checkout.

Any customs duties or import taxes charged in the United States are paid by you when the parcel arrives. Any tax we collect ourselves is shown at checkout before you pay.

More answers in our FAQ.

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